original description Goodwin, C.E.; Picton, B.E. 2009. Demosponges of the genus Hymedesmia (Poecilosclerida: Hymedesmidae) from Rathlin Island, Northern Ireland, with a description of six new species. Zoological Journal of the Linnean Society 156: 896-912., available online athttps://doi.org/10.1111/j.1096-3642.2008.00498.x[details]